1. 请用已学过的知识编写程序,找出给定长字符串中的密码,密码的埋藏点符合以下规律:Y5d|MAp
Y5d|MAp
a) 每位密码为单个小写字母
b) 每位密码的左右两边均有且只有三个大写字母
Python
3um7_0 Pzy"pCV#RdwA,21^[t
- str1 = ‘‘‘
- YnaJfNLqJgcxRjBmRpOYgNpZOpzMOCVIRiiXdIqqFxPJhQqJadKiCesOsZoWGWbbQSVRZUlbNZdzeUTE
- nhdMSCKCPbpWZguZHGkLiWCisjqnaLbJpbRFAHPjGbHOXKZQXoQQZohmVqjTcdWNhXEjPlLKnjpwbMPQ
- ybzDvGgkybXtbDmjQuyOrMrcYGRGGfuuPXzieaetSBidnSRPsLaXKGcxDkXmHbqMWZJXsQkwtojlxOeU
- KSIFdVvNEnOUmIZDdlnwtJcPBlcpRWNTazpzgItwJotSLWZruzrMlSGASMWDwOqTpeYYHaTHCCurPdwB
- AWzUtwblZXNrBYdjUoDacvmRVURqOzUPlnFISsZMFPtthnDHSsFgkYfsMtXFuNPhLTleWVrmelyFaemo
- bVIhEAxNwOUDQCOCDIBHsQlFxCbHErKiBsvQNjuIGnIzZiwoVTdUZnucSaKdHrxJeGQfTawFJefGJFFa
- GHzELfnGBmkZyorbbDDwhvEVeIYIGLPMEuZduqFjbeWbVfzVIRZNXwPLgcYUsevuhEQXfYcJshYnJaWz
- iqvlswEBRKNYEJidlzdWnQJpBtyjHYVpkQGzdYkeREqjhmmnUIbGZVnwwaMKqgXfURSICNxdteUSGhGZ
- UEEFhWRoTKGRwFmPpZPOsalsrNOlkTdXqGKoWlWkqJvYYrtLiTfhdItMbbhdumSYgCcQVUARnYFWkCsC
- jElZxrQHIlbTHFLOnrutlvyxzaSIdkJgeyMUnUmtXfnaIedbAInAuQssOQqBTLbvFRiqKqUSdUEmcRmN
- LvAxlgliymfbjTwDSqNTLcAEIerzpUShNKkuehciEAYeGJOFFcOvurJFUyfZhQqzfaneiBcrPhaphSCB
- StQiJvtoPhHcLUbriDUIfifVFnNtJfGlmcbQJSXsZfVjpbqnkMllUmHzLvEuSarSlNlNHsWvYlfhjMEA
- epYTjoRGZeAAtURFeDfDxTYmOmONuQQBdcdncFGjhHmKlwqmUWoXuIXIxaaXnNThgPGtIlynrUIPLQTG
- xXhattDrfBGbZRveKbgjzxJLdYREQlMeLtcIEUoyJocdAfUbymxuFLVjGkOQniiPParqoyQYfDYAQTkM
- WLicLxpEFkBbwlKrTyYilKTtYkpVGxtOjYmcBDOrwFhFiGutmpTyTarUbVUeSevBTdaPDpjRkaEmLJMg
- WsMhSGfIcBChcqrRKgKpjvGnFipjswgjetRtniMagakbCXAjpzWTtMlgZGCJwGyglpcLebrKWhgwJfWV
- qGifWNEpCtjuejHoyVCdIxzMYGnfoslgTNAJdtVBWDVoGLzHSAVBTnhNIvAOExQNiJOIPPiHkdaRbfaP
- ixDDoCDOOeAqvQJFxLWDICfGmufyxmaMshbvcrtjqqVtffZTnbtCOQfzRMGwOQEKaAmSWjnYdNgvdkmd
- dQmaKZSdqKNrnvJlcyVMKuNWmuoOeyKecgjXbmSqnpjwJEaDYoehEklEgJyiksGxdEKgfYRXQecRZgfe
- qKWGc
- ‘‘‘
- countA = 0 # 统计前边的大写字母
- countB = 0 # 统计小写字母
- countC = 0 # 统计后边的大写字母
- length = len(str1)
- for i in range(length):
- if str1[i] == ‘\n‘:
- continue
- """
- |如果str1[i]是大写字母:
- |-- 如果已经出现小写字母:
- |-- -- 统计后边的大写字母
- |-- 如果未出现小写字母:
- |-- -- 清空后边大写字母的统计
- |-- -- 统计前边的大写字母
- """
- if str1[i].isupper():
- if countB:
- countC += 1
- else:
- countC = 0
- countA += 1
- """
- |如果str1[i]是小写字母:
- |-- 如果小写字母前边不是三个大写字母(不符合条件):
- |-- -- 清空所有记录,重新统计
- |-- 如果小写字母前边是三个大写字母(符合条件):
- |-- -- 如果已经存在小写字母:
- |-- -- -- 清空所有记录,重新统计(出现两个小写字母)
- |-- -- 如果该小写字母是唯一的:
- |-- -- -- countB记录出现小写字母,准备开始统计countC
- """
- if str1[i].islower():
- if countA != 3:
- countA = 0
- countB = 0
- countC = 0
- else:
- if countB:
- countA = 0
- countB = 0
- countC = 0
- else:
- countB = 1
- countC = 0
- target = i
- """
- |如果前边和后边都是三个大写字母:
- |-- 如果后边第四个字母也是大写字母(不符合条件):
- |-- -- 清空记录B和C,重新统计
- |-- 如果后边仅有三个大写字母(符合所有条件):
- |-- -- 打印结果,并清空所有记录,进入下一轮统计
- """
- if countA == 3 and countC == 3:
- if i+1 != length and str1[i+1].isupper():
- countB = 0
- countC = 0
- else:
- print(str1[target], end=‘‘)
- countA = 3
- countB = 0
- countC = 0
q